[lldb-dev] Logging different channels to different files

[Zachary Turner]

void
Log::VAPrintf(const char *format, va_list args)
{
    // Make a copy of our stream shared pointer in case someone disables our
    // log while we are logging and releases the stream
    StreamSP stream_sp(m_stream_sp);
    if (stream_sp)
    {
        static uint32_t g_sequence_id = 0;
        StreamString header;
* // Enabling the thread safe logging actually deadlocks right now.*
* // Need to fix this at some point.*
//        static Mutex g_LogThreadedMutex(Mutex::eMutexTypeRecursive);
//        Mutex::Locker locker (g_LogThreadedMutex);


On Thu, May 7, 2015 at 9:09 AM Ed Maste <emaste at freebsd.org> wrote:

> On 7 May 2015 at 01:03, Vince Harron <vince at nethacker.com> wrote:
> > Okay, I don't know what I was thinking.
> >
> > Debugger.cpp:1317
> > It's re-using an existing stream if the filename is identical.
> >
> > The stomping that Ed is seeing might be solvable by using the -t flag as
> Jim
> > suggests.
>
> Possibly - I only looked into this when I was first getting started
> with LLDB and enabled a large set of log channels to try to understand
> how everything worked. I distinctly recall that log entries were
> completely missing though, not just "interweaved" as the help for -t
> suggests.
>
> Ah, this seems a bit bizarre:
>
>     if (log_options == 0)
>         log_options = LLDB_LOG_OPTION_PREPEND_THREAD_NAME |
> LLDB_LOG_OPTION_THREADSAFE;
>
> so by default we get the thread name and threadsafe logging, but if
> any options are set then they are not automatically set.
>
> Oh, but I don't see anywhere LLDB_LOG_OPTION_THREADSAFE is checked.
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